60-Inch OD Seamless Alloy Steel Casing Pipe
Heavy-wall seamless alloy steel pipe with 60-inch (1524 mm) OD for well casing in oil extraction. Meets HTS 7304.59.80.80 as a seamless, circular cross-section tube of other alloy steel exceeding 406.4 mm diameter. Provides structural support in boreholes resisting collapse.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of cold-drawn construction
Cold-drawn seamless alloy tubes shift to 7304.29, while hot-finished large pipes remain in 7304.59.
If imported assembled with wellhead fittings
As parts of oilfield machinery, assembled sets classify under 8431 rather than individual pipes.
If threaded and coupled ends
Threaded/coupled pipe fittings for casing move to 7307, treated as assembled fittings not plain tubes.
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Import Tips & Compliance
• Include NDT (non-destructive testing) reports like ultrasonic for seamless integrity verification
• Confirm OD tolerance within ASTM A106 or API specs to validate >406.4 mm criterion
• Avoid common pitfall of declaring as 'tubing'—casing over 406.4 mm stays in 7304.59, not 7306
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